Introducing KaiZen OpenAPI 3.0 Parser: fast, flexible Java parsing & validation

Posted by Andy Lowry on Apr 12, 2017 04:22 PM

Are you excited about OpenAPI 3.0?

Here's why it matters: The Swagger 2.0 specification was released 2½ years ago, emerging as the de facto industry standard for API definition and documentation. SmartBear made it official a year later, in November 2015 with the formation of the OpenAPI Initiative under the Linux Foundation, with Google, IBM, Microsoft and others as founding members.

The next generation of API modeling is now here. With the OpenAPI Spec v3 Draft release, developers can describe a broader range of modern REST APIs in greater detail, including hyperlinks, webhooks, better JSON Schema support, rich examples, and more.

At RepreZen, we're excited and working hard to bring the full range of OpenAPI 3.0's expanded capabilities into the RepreZen API Studio design experience. KaiZen OpenAPI Parser, now available on GitHub, is the first cornerstone of our open source stack for OpenAPI 3, based on the draft spec. It's built for speed, and highly configurable. If you're building OpenAPI 3 tooling or solutions in Java, this is a great place to start.

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RepreZen API Studio 1.5 Connects your API Design Process, Team & Dev Environment

Posted by Miles Daffin on Mar 01, 2017 06:28 PM

APIs are the neural connections of the digital economy, allowing systems to connect, collaborate, and converse with meaningful data. But these connections don't start with fully working APIs; they start with API design.

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I will grant you three wishes...

Posted by Miles Daffin on May 19, 2016 04:59 PM

When I started out in this business back in 1999, my first job was with a small and thriving consultancy in Rotterdam, Holland called 'Holland Object Technology' or 'HOT Objects' for short (may it RIP). One of the first conversations I recall having at this wonderful, creative little company was with my boss - a 6'6" former Dutch army sargeant with an incredible intellect and vast experience. "What's great about this business," he said, "is that you can have an idea for a steam engine in the morning - and watch it running on the lawn in the afternoon!"

He had captured the essence of what I really enjoyed about software engineering: the rapidity with which one could be creative, the almost magical speed (when compared with classical professions like 'real' engineering) with which one could conjure things of mere thought-stuff that actually did something useful (unlike the many dead essays I had written as English undergraduate). 

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Quality API Design and Implementation through RepreZen and SmartBear

Posted by Paul Bruce on Mar 30, 2016 09:42 AM

Guest Post by Paul Bruce from SmartBear Software

Paul Bruce, Product Marketing Manager for the Ready! API family of products at SmartBear, shares his thoughts on the new RAPID-ML Plugin for Ready! API. 

We’re excited to announce a new partnership with the good folks at RepreZen! Both SmartBear and RepreZen share a deep passion for great API design. We’ve combined the power of our platforms to simplify the process of designing and testing high-quality APIs from inception to production deployment.

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RepreZen Selected for Startup Bootcamp Fintech NYC Accelerator

Posted by Ted Epstein on Mar 25, 2016 09:34 PM

With great excitement and anticipation, I'm happy to announce that RepreZen has been selected to participate in Startup Bootcamp FinTech, a premier accelerator program here in New York.

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Swagger-OpenAPI: New Energy, New Opportunities in RepreZen API Studio

Posted by Ted Epstein on Mar 05, 2016 08:55 AM

RepreZen API Studio started with the goal of enabling deep interoperability, by unifying data representations across APIs. The core of the product was the API modeling language that became RAPID-ML. API Studio provides the tooling: the RAPID-ML editor, live documentation and diagram views, sandbox testing and code gen framework.

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Hypermedia Part 2: Couples Therapy for API Providers and Consumers

Posted by Ted Epstein on Oct 09, 2015 05:11 PM

In Part 1, we talked about the hypermedia mosh pit that erupted when Roy Fielding leveled some blunt criticism at non-RESTful interfaces advertised under the banner of REST, and went on to list some principles of hypertext-driven API design.

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Microservices are About Componentization, Not Centralization

Posted by Ted Epstein on Jul 13, 2015 11:07 PM

There’s a great deal of interest in microservices architecture.  Forward thinking tech companies have provided the thought leadership; startups and enterprise IT have taken an interest; and technology vendors, this one included, have all jumped on the bandwagon.

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AWS API Gateway: Platform as a Service, API Management as a Plank

Posted by Ted Epstein on Jul 10, 2015 11:09 PM

Today, Amazon announced the  AWS API Gateway at AWS Summit in New York.  Now the most important API management capabilities -- authorization, access control, traffic management, monitoring, analytics, version management and SDK generation -- are a virtual plank in the AWS platform as a service. 

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D-Factor: How Strong is your Data Contract?

Posted by Ted Epstein on Nov 05, 2014 11:28 PM

Reprinted from original publication on

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At RepreZen, we're building our business on two things:  thought leadership in API design, and great conversations.

This blog is one of many places where we'll have illuminating, mutually enriching conversations with our customers, partners, and the software community at large.  Please chime in with your thoughts and let's get started!

RepreZen API Studio - Free Trial!

Installing RepreZen API Studio is easy!  Here's how it works:

number_circle_1   Submit the trial registration form.
number_circle_2   Check your inbox for download instructions.
number_circle_3   Download and run the automated installer.


System Requirements


RepreZen API Studio runs on the following operating systems:

  • 64-bit Windows 7, 8.0 and 8.1
  • Mac OS X 10.7 or higher
RepreZen API Studio requires JDK 1.7 or higher.